Vortech Ti trim boost with 3.15 pulley

[98 Saleen Cobra]

And that’s why the boost is low lol. You have the factory crank size pulley bro. Go and enjoy the car. The pn is 918037

 

[MOmystic]

And that’s why the boost is low lol. You have the factory crank size pulley bro. Go and enjoy the car. The pn is 918037

Are you sure? Sorry… I’m not. I haven’t even seen the crank pulley nor measured it myself. Which ati crank pulley would you suggest for the boost i seek? Or in another words, if it got swapped out with another, which one and how much more boost May i see?

 

[98 Saleen Cobra]

Yes I’m sure. But I’m not gonna argue about it. Your money, your car. I’ve been doing this with mod motors and Vortech’s since 2000. S, T, JT, Ysi, Ysi B. 6 rib 8 rib and now a custom 10 rib.

If you want more power call up innovators west throw a 18% od crank pulley on it and a 3.33” upper on the ti trim will yield close to 20psi and 19* of timing on e85 will be in the mid to high 700s.

Good luck

 

[MOmystic]

Yes I’m sure. But I’m not gonna argue about it. Your money, your car. I’ve been doing this with mod motors and Vortech’s since 2000. S, T, JT, Ysi, Ysi B. 6 rib 8 rib and now a custom 10 rib.

If you want more power call up innovators west throw a 18% od crank pulley on it and a 3.33” upper on the ti trim will yield close to 20psi and 19* of timing on e85 will be in the mid to high 700s.

Good luck

Thanks for your help man, i greatly appreciate it.

 

[MOmystic]

Yes I’m sure. But I’m not gonna argue about it. Your money, your car. I’ve been doing this with mod motors and Vortech’s since 2000. S, T, JT, Ysi, Ysi B. 6 rib 8 rib and now a custom 10 rib.

If you want more power call up innovators west throw a 18% od crank pulley on it and a 3.33” upper on the ti trim will yield close to 20psi and 19* of timing on e85 will be in the mid to high 700s.

Good luck

The shop measured the crank pulley with a dial caliper and it measured 7.50”.. not the stock size crank pulley.. got me wondering if the cams specs are off or not dialed in correctly..

 

[MOmystic]

Thanks for your help man, i greatly appreciate it.

Gonna swap to a 2.95 blower pulley and see what it does and go from there…

 

[98 Saleen Cobra]

The shop measured the crank pulley with a dial caliper and it measured 7.50”.. not the stock size crank pulley.. got me wondering if the cams specs are off or not dialed in correctly..

Did they measure inside the ribs or the outer diameter

 

[98 Saleen Cobra]

Here is the ati website. If the outer diameter is infact 7.5” that would be a 12% overdrive crank. The 3v damper fits just fine on the 96-04s. Again the boost would still make sense with the cams and exhaust you have. On a stock cammed engine it would be around 19 or so

 

[MOmystic]

Did they measure inside the ribs or the outer diameter

Believe it was outer diameter

 

[MOmystic]

Here is the ati website. If the outer diameter is infact 7.5” that would be a 12% overdrive crank. The 3v damper fits just fine on the 96-04s. Again the boost would still make sense with the cams and exhaust you have. On a stock cammed engine it would be around 19 or so

So i have basically run out of options at this point for my setup making more power, correct? Only thing i could do at this point is overspin the Ti trim?

 

[98 Saleen Cobra]

So i have basically run out of options at this point for my setup making more power, correct? Only thing i could do at this point is overspin the Ti trim?

You’re making the proper power with boost you’re seeing. Overspin the blower it’s fine. I spin my Ysi-b to 80k lol. Don’t go spinning the Ti that hard but I’ve overspun every single Vortech I’ve owned by at least 5k blower rpm.

Also no matter what you do there is slip happening. So likely you’re still just fine.

 

[MOmystic]

You’re making the proper power with boost you’re seeing. Overspin the blower it’s fine. I spin my Ysi-b to 80k lol. Don’t go spinning the Ti that hard but I’ve overspun every single Vortech I’ve owned by at least 5k blower rpm.

Also no matter what you do there is slip happening. So likely you’re still just fine.

Thanks

 

[MOmystic]

You’re making the proper power with boost you’re seeing. Overspin the blower it’s fine. I spin my Ysi-b to 80k lol. Don’t go spinning the Ti that hard but I’ve overspun every single Vortech I’ve owned by at least 5k blower rpm.

Also no matter what you do there is slip happening. So likely you’re still just fine.

With a 12% od crank and a 2.95 blower pulley i was thinking of switching to, I’d be spinning 6,400rpm’s over what vortech claims is acceptable at 7000rpm..

 

[98 Saleen Cobra]

With a 12% od crank and a 2.95 blower pulley i was thinking of switching to, I’d be spinning 6,400rpm’s over what vortech claims is acceptable at 7000rpm..

Yea that’s nothing. It’ll be just fine man.

 

[MOmystic]

Yea that’s nothing. It’ll be just fine man.

Thanks for your help. Greatly appreciated.

 

[98 Saleen Cobra]

Thanks for your help. Greatly appreciated.

No problem man. Good luck keep us posted

 

[MOmystic]

Will

No problem man. Good luck keep us posted

Will do!!

 

[MOmystic]

Will

Will do!!

Here is the dyno graph with the 2.95 pulley. Cars peak hp was at 6500rpms. Believe the car is at 16.5* of timing and didnt like anymore timing after that. I’m gonna have them throw a 93 octane tune on it. Think i overfilled with setting it up for E85 unless i go with a bigger blower set up or even smaller pulley..

 

[03cobra#2]

Here is the dyno graph with the 2.95 pulley. Cars peak hp was at 6500rpms. Believe the car is at 16.5* of timing and didnt like anymore timing after that. I’m gonna have them throw a 93 octane tune on it. Think i overfilled with setting it up for E85 unless i go with a bigger blower set up or even smaller pulley..

Good numbers. I'm not sure difficult pulley swaps are but you could send the 2.95 pulley out to get coated and that should fix any belt slip you may have. Only problem with that is Carbonite coating does reduce belt life. So you run the coated pulley to make the boost and the larger non coated one to putz around town with.